The Waters Alliance Sapphire Plunger Assembly (P/N: WAT270488) is a high-quality replacement component designed for use with Waters Alliance HPLC systems, including models 2796, 2690/2690D, 2695/2695D, 2790, and 2795. Engineered with durable sapphire material, this plunger ensures superior wear resistance, reliable performance, and extended service life, helping to maintain system accuracy and reduce downtime in demanding chromatography workflows.